Improvement in sewing machines



"im-in sus 'me-f @frita T. K. BE-ED. OFy EAST BRIDGEWATER, `ASSIGIVTO-Rv TO DAVID WHITTEMORE,

IMPROVEMENT IN SEWING MACHINES- "dit: Sdgthult :riunita iu ibrsrtiicrs iatmt mit making tati ut 5mm.

cro LL-WHOM'IT MAY eoNonnN:

I Be it known that I, T. K. REED, of. East Bridgewater, in thacounty of Plymouth, andStatc of Massachusetts, havesinvented an vImprovement in Sewing Machines and I do hereby, declare that the following, taken in connection with the drawingsrwhich accompany and form part of this speeicutiomis n description of my invention suiicient to enable those skilled in the ari; to practise it.

In that class of ,sewing machines in whicha hook or crochetneedle is employed, such needle working up through thetable orworkl-s'upporting surface, and drawing the thread (in its hook) down through the work, a'nd through theV loop last formed, (such machines being used particularly for sewing leather with waxed threndJ Y there is generally combined with` the needle und other mechanism an awl or piercing instrument, this awt being in vertical line with the needle vund above the table, andhaving c downward movement imparted to it to pierce the leather, the needle in its ascent passing through the hole so made by the owl. -The objectof such arrange# ment'is this: The face side 'ofthel leather is uppermost, and where the needle inits rise pierces the leather, and

forms the-hole through which the thread is to pass, the leather displaced in making lsuch hole is thrown up iu the form of a burr, (the hole being made by displacement, and not by removal of the leather,) and this burr or ragged edge comes upon` the upper side of the work and defuccs it. But by piercing the leather in a downward direction, by an auxiliary instrument, this burr is formed, if formed at all, upon the under side-of theleather, where -its presence does not -mar,the appearance 'of `the work. The use of an awl, however, as on auxiliary piercing instrument, is to some extent objectionable, and the object of my invention is to provide a means for preventing the ,formation of such protruding burr, when thegneedle is the primary, piercinginstrumenhor `is used in the double capacity of awl and thread-carrier. For 'this purpose I employ aitubular foot, arranged above the table, and in vertical line with',the needle,-'and having a vertical yrnorem'ent to -and away from, the

table, this foot after each feedmovement of the leather, and before vthe needle enters the leather, coming down upon the leather, and` pressin-git iirmlyagainstithe table, `the tube in the foot being-.of size just sufn'cient to allow the needle to pass freely up into it, while the surrounding surface which bears upon the leather, supports the leather around the heedl e,and com'pcls it.t o expandy radially, us-the point of the needle passes through, in contradistinction-to being pressed up in the form of o burr or protrusion, as would be the ense lwere the needle to'ct as the piercing instrument or awl without such foot. It is-in such employment of this tubular foot in connection with the needle that the invention consists, and the drawings represent that port of a 'sewing-machine mechanism with which the invention is directly combined- A, showing a front elevation `of the stitch-forming'mechanism, with the needle below the-table, and the -tubular presser-foot above and away from the work; 13,1. sectional elevation, showing the foot. upon thework and surrounding the needle. a denotes the needle; 5,Athe needle-bang c, the cast-off: d,the presser-foot; e,- the thread-guide, all shown las combined and arranged to-op'crate' in the ordinary manner. f is a spindle or rod, working vertically through the head g, and"having at its lower'enda foot, 71, made tubular, as seen nt'z'. lThis tube may he slotted out to the sides of the foot just above the lower end, as seen at 1:, but nt its lowercnd its;

face is plain and dat, with only the tube or hole t' opening out .of it, in direct axial line withthe needle. The rod or spindle f has vertical motion imparted to it,"b'y any suitable connection, from the driving-shaft of the machine, the times and direction of such'motiens being as follows :y 'A i y .When the work has been fed 'by the ueedle,iand the thread has then eeen drawn down by the needle, the parts arein position as eeen at A. 'The carrier lthen moves laterally, carrying the needle buck into vertical and axial line with the tubular foot t, and during this lateral movement the'foot h 'descends upon the work-as' seen at B. The needle next ascends, its point piercing the holo in the leather, and entering the foot-laas seen..

4.at B, theA presence and pressure of the foot upon the leather holding the leather in its plane, and preventing any 'movement of theuplerced parts exceptin-gin radiallycxpanding directiions,.ond thus preserving thefuce of the work in unmarred condition.V `After the needle has completed, or while completing its ascent, the foot It rises from the work and from the needle. The presser-foot d also rises from 'the work,and the needle then moves for.n

ward with the work in the usual manner.' The presser-foot then descends, the guides carries the thread against the needle in the path of its hook,'and the needle again descends, as seen at A, the operation being continued,

as will be readily understood.

I claim, in combination with the hook, needle,and a cast-04E, the supplemental presser-foot, constructed and operating substantially as and lfor the purpose' set forth.

T.' REED.

Witnesses:

J. B. Cnossr, F. Govan.' 

